<template>
  <div>
    <div class="search">
      <input class="search-input" v-model="keyword" placeholder="请输入城市名或拼音" />
    </div>
    <div class="search-content" v-show="keyword" ref="search">
      <ul>
        <li class="search-item" v-for="city in list" :key="city.id" @click="handleClickCity(city.name)">
          {{ city.name }}
        </li>
        <li class="search-item" v-show="hasNoData">
          没有找到匹配的数据
        </li>
      </ul>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapMutations } from 'vuex'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data() {
    return {
      keyword: '', //搜索关键字
      timer: null,
      list: [] //搜索结果集
    }
  },
  methods: {
    ...mapMutations(['changeCity']),
    handleClickCity(city) {
      this.changeCity(city)
      this.$router.push('/')
    }
  },
  mounted() {
    this.scroll = new Bscroll(this.$refs.search, { click: true })
  },
  computed: {
    hasNoData() {
      return !this.list.length
    }
  },
  watch: {
    keyword() {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return false
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let key in this.cities) {
          this.cities[key].forEach(city => {
            if (city.spell.indexOf(this.keyword) > -1 || city.name.indexOf(this.keyword) > -1) {
              result.push(city)
            }
          })
        }
        this.list = result
      }, 100)
    }
  }
}
</script>
<style lang="less" scoped>
@import '~styles/varibles.less';
.search {
  height: 0.72rem;
  padding: 0 0.2rem;
  background: @bgColor;
  .search-input {
    box-sizing: border-box;
    width: 100%;
    height: 0.62rem;
    padding: 0 0.1rem;
    line-height: 0.62rem;
    text-align: center;
    text-align: center;
    border-radius: 0.06rem;
    color: #666;
  }
}
.search-content {
  z-index: 1;
  position: absolute;
  overflow: hidden;
  top: 1.58rem;
  left: 0;
  right: 0;
  bottom: 0;
  background: #eee;
  .search-item {
    line-height: 0.62rem;
    padding-left: 0.2rem;
    background: #fff;
    color: #666;
  }
}
</style>
